two men were once stranded in a desert. One man slapped the other. The offended man wrote in the sand of the desert, "Today, my best friend slapped me." Later, they found an oasis. The man who had slapped his friend fell in the water, and surely would have drowned if his friend had not saved him. The saved man then carved into a stove, "Today, my friend saved my life." this must be some pretty wet sand.